Morphological features of celiac disease include all except:
**Core Concept**
Celiac disease is a chronic autoimmune disorder characterized by small intestine mucosal damage and malabsorption of nutrients. The morphological features of celiac disease involve changes in the small intestine, which are primarily due to an immune-mediated response to gluten.
**Why the Correct Answer is Right**
The morphological features of celiac disease include villous atrophy, crypt hyperplasia, and increased intraepithelial lymphocytes. Villous atrophy is a hallmark of celiac disease, where the villi of the small intestine become flat and broad, leading to a reduction in the surface area for nutrient absorption. Crypt hyperplasia is the increase in the depth of the crypts, which is a compensatory response to the loss of villi. Increased intraepithelial lymphocytes are a result of the immune response to gluten, leading to an infiltration of lymphocytes into the epithelial layer.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is not a morphological feature of celiac disease.
* **Option B:** This option is incorrect because it is a characteristic of other gastrointestinal disorders, not celiac disease.
* **Option C:** This option is incorrect because it is a feature of celiac disease, but not the most specific or sensitive one.
**Clinical Pearl / High-Yield Fact**
It is essential to note that the morphological features of celiac disease can be reversed with a gluten-free diet, making it a crucial aspect of diagnosis and management.
**Correct Answer: A.**